\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Casualty Results (Six Region Strategy)\label{tab:cas6}}
\begin{tabular}{l*{4}{c}}
\hline\hline
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
                    &\multicolumn{1}{c}{Casualties}&\multicolumn{1}{c}{Casualties}&\multicolumn{1}{c}{Casualties}&\multicolumn{1}{c}{Casualties}\\
\hline
treat\(\cdot\)nwa   &      -5.698\sym{*}&      -8.735\sym{*}&      -8.860\sym{*}&      -9.532\sym{*}\\
                    &     (1.406)       &     (2.161)       &     (2.013)       &     (2.174)       \\
[1em]
MO                  &                   &                   &       4.817\sym{*}&                   \\
                    &                   &                   &     (2.075)       &                   \\
[1em]
Peace               &                   &                   &      -1.024       &                   \\
                    &                   &                   &     (1.008)       &                   \\
[1em]
Obamareview         &                   &                   &       4.655       &       4.915       \\
                    &                   &                   &     (2.732)       &     (3.079)       \\
[1em]
Haqqani             &                   &                   &      -1.750       &      -0.581       \\
                    &                   &                   &     (1.360)       &     (1.421)       \\
\hline
Observations        &        3638       &        3638       &        3638       &        3638       \\
WB p-value          &     0.00200       &     0.00200       &     0.00200       &     0.00200       \\
Year FE             &           X       &           X       &           X       &           X       \\
Tehsil FE           &           X       &           X       &           X       &           X       \\
Time Trends         &                   &           X       &           X       &           X       \\
Controls            &                   &                   &           X       &           X       \\
Hetero. Ctrls       &                   &                   &                   &           X       \\
\hline\hline
\multicolumn{5}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{5}{l}{\footnotesize \sym{*} \(p<0.05\)}\\
\end{tabular}
\end{table}
